.first-div{
    margin-top: 10px;
    background-color: darkorange;
    height: 40px;
}
.first-div div,.second-div div {
    color: #ffffff;
    height: 40px;
    border: none;
}

.top-text{
    font-size: 24px;
}

/* 下拉按钮样式 */
.dropbtn {
    backgopxd-color: orange;
    width:180px;
    color: white;
    padding: 7px;
    font-size: 20px;
    border: none;
    text-align: center;
    margin-left: 50px;
}

.dropbtn span{
    text-align: center;
    position: relative;
    top: 0px;
}
.message {
    text-decoration: none;
    text-align: center;
    color: white;
}
/* 容器 <div> - 需要定位下拉内容 */
.dropdown {
    position: relative;
    display: inline-block;
}

/* 下拉内容 (默认隐藏) */
.dropdown-content {
    display: none;
    position: absolute;
    min-width: 180px;
    margin-left: 50px;


}

/* 下拉菜单的链接 */
.dropdown-content a {
    text-align: center;
    color: black;
    padding: 12px 7px;
    text-decoration: none;
    display: block;
    background: #fff;
    width: 180px;
}

/* 鼠标移上去后修改下拉菜单链接颜色 */
.dropdown-content a:hover {
    background-color: #f1f1f1;
    width: 180px;

}

/* 在鼠标移上去后显示下拉菜单 */
.dropdown:hover .dropdown-content {
    display: block;
}

/* 当下拉内容显示后修改下拉按钮的背景颜色 */
.dropdown:hover .dropbtn {
    background-color: orange;
}

.col-md-2  p{
    text-align: center;
    line-height: 42px;
    font-size: 20px;
}


.top-second .logo{
    margin-left: 80px;
}

.top-second .first-text{
    margin-left: 175px;
}

.top-second span{
    font-size: 20px;
    margin-left: 30px;
    margin-right: 30px;
}

.top-second .top-down{
    height: 1px;
    background-color: #dcdcdc;
    width: 100%;
}
